[ssw][yang] update field name in HA_GLOBAL_CONFIG to align with HLD. (sonic-net#25214)

[ssw][yang] update field name in `HA_GLOBAL_CONFIG` to align with HLD.

Author: zjswhhh

src/sonic-yang-models/doc/Configuration.md

@@ -3480,7 +3480,7 @@ Like NTP global configuration, DASH HA global configuration must have one entry
         "global": {
             "vnet_name": "Vnet55",
             "cp_data_channel_port": "11362",
-            "dp_channel_port": "11368",
+            "dp_channel_dst_port": "11368",
             "dp_channel_src_port_min": "49152",
             "dp_channel_src_port_max": "53247",
             "dp_channel_probe_interval_ms": "100",
@@ -3496,7 +3496,7 @@ Like NTP global configuration, DASH HA global configuration must have one entry
 
 **cp_data_channel_port**: Control plane data channel port, used for bulk sync.
 
-**dp_channel_port**: Destination port when tunneling packets via DPU-to-DPU data plane channel.
+**dp_channel_dst_port**: Destination port when tunneling packets via DPU-to-DPU data plane channel.
 
 **dp_channel_src_port_min**: Minimum source port used when tunneling packets via DPU-to-DPU data plane channel.
 

src/sonic-yang-models/tests/files/sample_config_db.json

@@ -3069,7 +3069,7 @@
             "global": {
                 "vnet_name": "Vnet55",
                 "cp_data_channel_port": "11362",
-                "dp_channel_port": "11368",
+                "dp_channel_dst_port": "11368",
                 "dp_channel_src_port_min": "49152",
                 "dp_channel_src_port_max": "53247",
                 "dp_channel_probe_interval_ms": "100",

src/sonic-yang-models/tests/yang_model_pytests/test_smart_switch.py

@@ -454,7 +454,7 @@ def test_dash_ha_global_config(self, yang_model):
                     "global": {
                         "vnet_name": "Vnet55",
                         "cp_data_channel_port": 11234,
-                        "dp_channel_port": 11235,
+                        "dp_channel_dst_port": 11235,
                         "dp_channel_src_port_min": 11236,
                         "dp_channel_src_port_max": 11237,
                         "dp_channel_probe_interval_ms": 500,

src/sonic-yang-models/yang-models/sonic-smart-switch.yang

@@ -301,7 +301,7 @@ module sonic-smart-switch {
 					type inet:port-number;
 				}
 
-				leaf dp_channel_port {
+				leaf dp_channel_dst_port {
 					description "Destination port when tunneling packets via DPU-to-DPU data plane channel";
 					type inet:port-number;
 				}